[v2,1/4] dt-bindings: media: Binding document for Qualcomm Camera Control Interface driver

Message ID 1507892203-17033-2-git-send-email-todor.tomov@linaro.org
State New
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Series
  • Qualcomm Camera Control Interface driver
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Commit Message

Todor Tomov Oct. 13, 2017, 10:56 a.m.
Add DT binding document for Qualcomm Camera Control Interface driver

CC: Rob Herring <robh+dt@kernel.org>
CC: Mark Rutland <mark.rutland@arm.com>
CC: devicetree@vger.kernel.org
Signed-off-by: Todor Tomov <todor.tomov@linaro.org>
---
 .../devicetree/bindings/i2c/i2c-qcom-cci.txt       | 46 ++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/i2c/i2c-qcom-cci.txt

Comments

Rob Herring Oct. 17, 2017, 10:21 p.m. | #1
gOn Fri, Oct 13, 2017 at 01:56:40PM +0300, Todor Tomov wrote:
> Add DT binding document for Qualcomm Camera Control Interface driver
> 
> CC: Rob Herring <robh+dt@kernel.org>
> CC: Mark Rutland <mark.rutland@arm.com>
> CC: devicetree@vger.kernel.org
> Signed-off-by: Todor Tomov <todor.tomov@linaro.org>
> ---
>  .../devicetree/bindings/i2c/i2c-qcom-cci.txt       | 46 ++++++++++++++++++++++
>  1 file changed, 46 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/i2c/i2c-qcom-cci.txt
> 
> diff --git a/Documentation/devicetree/bindings/i2c/i2c-qcom-cci.txt b/Documentation/devicetree/bindings/i2c/i2c-qcom-cci.txt
> new file mode 100644
> index 0000000..cb1fe15
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/i2c/i2c-qcom-cci.txt
> @@ -0,0 +1,46 @@
> +Qualcomm Camera Control Interface controller
> +
> +Required properties:
> + - compatible: Should be one of:
> +   - "qcom,cci-v1.0.8" for 8916;
> +   - "qcom,cci-v1.4.0" for 8996.

Does using version numbers really buy anything over using SoC names?

> + - #address-cells: Should be <1>.
> + - #size-cells: Should be <0>.
> + - reg: Base address of the controller and length of memory mapped region.
> + - interrupts: Specifier for CCI interrupt.
> + - clocks: List of clock specifiers, one for each entry in clock-names.
> + - clock-names: Should contain:
> +   - "mmss_mmagic_ahb" - on 8996 only;
> +   - "camss_top_ahb";
> +   - "cci_ahb";
> +   - "cci";
> +   - "camss_ahb".
> +
> +Required properties on 8996:
> + - power-domains: Power domain specifier.
> +
> +Optional:
> + - clock-frequency: Desired I2C bus clock frequency in Hz, defaults to 100 kHz
> +   if omitted.

I2C freq? The block has an I2C controller? If so, you should explicitly 
state that somewhere in here and show a sensor as a child node.


> +
> +Example:
> +
> +                cci@a0c000 {
> +                        compatible = "qcom,cci-v1.4.0";
> +                        #address-cells = <1>;
> +                        #size-cells = <0>;
> +                        reg = <0xa0c000 0x1000>;
> +                        interrupts = <GIC_SPI 295 IRQ_TYPE_EDGE_RISING>;
> +                        power-domains = <&mmcc CAMSS_GDSC>;
> +                        clocks = <&mmcc MMSS_MMAGIC_AHB_CLK>,
> +                                        <&mmcc CAMSS_TOP_AHB_CLK>,
> +                                        <&mmcc CAMSS_CCI_AHB_CLK>,
> +                                        <&mmcc CAMSS_CCI_CLK>,
> +                                        <&mmcc CAMSS_AHB_CLK>;
> +                        clock-names = "mmss_mmagic_ahb",
> +                                        "camss_top_ahb",
> +                                        "cci_ahb",
> +                                        "cci",
> +                                        "camss_ahb";
> +                        clock-frequency = <400000>;
> +                };
> -- 
> 2.7.4
>

Patch

diff --git a/Documentation/devicetree/bindings/i2c/i2c-qcom-cci.txt b/Documentation/devicetree/bindings/i2c/i2c-qcom-cci.txt
new file mode 100644
index 0000000..cb1fe15
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/i2c-qcom-cci.txt
@@ -0,0 +1,46 @@ 
+Qualcomm Camera Control Interface controller
+
+Required properties:
+ - compatible: Should be one of:
+   - "qcom,cci-v1.0.8" for 8916;
+   - "qcom,cci-v1.4.0" for 8996.
+ - #address-cells: Should be <1>.
+ - #size-cells: Should be <0>.
+ - reg: Base address of the controller and length of memory mapped region.
+ - interrupts: Specifier for CCI interrupt.
+ - clocks: List of clock specifiers, one for each entry in clock-names.
+ - clock-names: Should contain:
+   - "mmss_mmagic_ahb" - on 8996 only;
+   - "camss_top_ahb";
+   - "cci_ahb";
+   - "cci";
+   - "camss_ahb".
+
+Required properties on 8996:
+ - power-domains: Power domain specifier.
+
+Optional:
+ - clock-frequency: Desired I2C bus clock frequency in Hz, defaults to 100 kHz
+   if omitted.
+
+Example:
+
+                cci@a0c000 {
+                        compatible = "qcom,cci-v1.4.0";
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                        reg = <0xa0c000 0x1000>;
+                        interrupts = <GIC_SPI 295 IRQ_TYPE_EDGE_RISING>;
+                        power-domains = <&mmcc CAMSS_GDSC>;
+                        clocks = <&mmcc MMSS_MMAGIC_AHB_CLK>,
+                                        <&mmcc CAMSS_TOP_AHB_CLK>,
+                                        <&mmcc CAMSS_CCI_AHB_CLK>,
+                                        <&mmcc CAMSS_CCI_CLK>,
+                                        <&mmcc CAMSS_AHB_CLK>;
+                        clock-names = "mmss_mmagic_ahb",
+                                        "camss_top_ahb",
+                                        "cci_ahb",
+                                        "cci",
+                                        "camss_ahb";
+                        clock-frequency = <400000>;
+                };